CVE-2018-14679

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-07-28 · updated 2026-06-17
Weakness: CWE-193

Description

An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. There is an off-by-one error in the CHM PMGI/PMGL chunk number validity checks, which could lead to denial of service (uninitialized data dereference and application crash).

Affected products

Cabextract Libmspack: 0.0.20060920-alpha, 0.3-alpha, 0.4-alpha, 0.5-alpha, 0.6-alpha
Cabextract Project Cabextract: through 1.5
Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 18.04
Debian Linux: 8.0, 9.0
Tower: 3.3
RedHat Enterprise Linux Desktop: 7.0
RedHat Enterprise Linux Server: 7.0
RedHat Enterprise Linux Workstation: 7.0

References

http://www.openwall.com/lists/oss-security/2018/07/26/1
http://www.securitytracker.com/id/1041410
https://access.redhat.com/errata/RHSA-2018:3327
https://access.redhat.com/errata/RHSA-2018:3505
https://bugs.debian.org/904802
https://github.com/kyz/libmspack/commit/72e70a921f0f07fee748aec2274b30784e1d312a
https://lists.debian.org/debian-lts-announce/2018/08/msg00007.html
https://security.gentoo.org/glsa/201903-20
https://usn.ubuntu.com/3728-1/
https://usn.ubuntu.com/3728-2/
https://usn.ubuntu.com/3728-3/
https://usn.ubuntu.com/3789-2/

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